Finding the Fourth Proportional to 81,638.30, 122,383.49 and 29,035.46
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Solution
The fourth proportional to 81,638.30, 122,383.49 and 29,035.46 is: 43,526.88
Step by Step Solution
- Step 1: Write the proportion equation
81,638.30 : 122,383.49 = 29,035.46 : x - Step 2: Convert to fraction form
81,638.30/122,383.49 = 29,035.46/x - Step 3: Cross multiply
81,638.30x = 122,383.49 × 29,035.46 - Step 4: Simplify right side
81,638.30x = 3,553,460,171.46 - Step 5: Solve for x
x = 3,553,460,171.46/81,638.30 - Step 6: Final answer
x = 43,526.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.